xvi LIST OF ILLUSTEATIONS 



I'AOK 



FIGURE 



31. A figure showing one method of determining the latitude ... 27 



32. A figure showing how to cut out the style for a paper model sun-dial . 28 



33. A Sun-dial ; seen from above ....... 28 



34. A Sun-dial ; seen from below . . 28 



35. Clouds. Cumulus indicative of approaching showers .... 29 



36. Clouds. Stratus pointing to fine weather ..... 30 



37. A Sea Anemone expanded ...... 33 



38. A Sea Anemone contracted ....... 33 



39. A marine aquarium kept without changing the water for many years by Mr 



Sibert Saunders of Whitstable ...... 35 



40. The back of an ordinary edible Crab . . . . . .41 



41. The under side of an ordinary edible Crab (female) .... 42 



42. The tail of a female edible Crab extended to show the swirmnerets . . 43 



43. The web of a Garden Spider ..... . . 44 



44. The House Spider ........ 45 



45. The Garden Spider ........ 46 



46. The leaf scar of a Sycamore twig . . . . . .51 



47. Diagram showing the leaf arrangement of Sycamore ... 52 



48. A Spindle Tree leaf ....... 54 



49. A Dogwood leaf . . . . . . . . . 54 



50. A Wayfaring Tree leaf ....... 54 



51. A Lesser Maple leaf ........ 55 



52. Greater Maple leaf ........ 55 



53. Guelder Kose leaf ........ 55 



54. A Horse Chestnut leaf ........ 56 



55. An Elder leaf . . . . . . . .56 



56. An Ash leaf ......... 56 



57. A Lime leaf ......... 57 



58. A Common Elm leaf . . . . . . . .57 



59. A Wych Elm leaf ........ 57 



60. A Plane leaf . . ... . . . .58 



61. A Spanish Chestnut leaf . ..... 58 



62. A Birch leaf ......... 59 



63. An" Alder leaf . ." . . . . . . .59 



64. A Beech leaf ....... .59 



65. A Hazel leaf . . . . . . . . 60 



66. A Hornbeam leaf ..*..-.... 60 



67. A Walnut leaf . . . . . . . . .60 



68. A Blackthorn leaf . . . . . . . .61 



69. A Bird Cherry leaf ....... 61 



